{"id":5283,"date":"2021-05-30T02:57:32","date_gmt":"2021-05-29T18:57:32","guid":{"rendered":"https:\/\/damogame.cn\/wordpress\/?p=5283"},"modified":"2021-05-30T02:57:32","modified_gmt":"2021-05-29T18:57:32","slug":"livepatch%ef%bc%9alinux%e5%86%85%e6%a0%b8%e6%9b%b4%e6%96%b0%ef%bc%8c%e6%97%a0%e9%9c%80%e9%87%8d%e6%96%b0%e5%90%af%e5%8a%a8","status":"publish","type":"post","link":"https:\/\/i007.cc\/wordpress\/archives\/5283","title":{"rendered":"Livepatch\uff1aLinux\u5185\u6838\u66f4\u65b0\uff0c\u65e0\u9700\u91cd\u65b0\u542f\u52a8"},"content":{"rendered":"<div class=\"rEsl9f\">\n<div class=\"_2mYfmT\">\n<div>\n<div class=\"_3U4Smb\"><a href=\"https:\/\/www.jianshu.com\/p\/218fba79eebf\">\u539f\u6587\u5730\u5740<\/a><\/div>\n<div><\/div>\n<div class=\"s-dsoj\"><time datetime=\"2019-07-15T06:17:23.000Z\">2019.07.15 14:17:23<\/time>\u5b57\u6570 2,874\u9605\u8bfb 8,714<\/div>\n<\/div>\n<\/div>\n<\/div>\n<article class=\"_2rhmJa\">\u5982\u679c\u60a8\u8fd0\u884cLinux\u670d\u52a1\u5668\uff0c\u8f6f\u4ef6\u4fee\u8865\u662f\u4e00\u9879\u5fc5\u987b\u5b9a\u671f\u6267\u884c\u7684\u4efb\u52a1\u3002\u867d\u7136\u5927\u591a\u6570\u7a0b\u5e8f\u53ef\u4ee5\u4f7f\u7528needrestart\u7b49\u5de5\u5177\u81ea\u52a8\u91cd\u542f\uff0c\u4f46\u6709\u4e00\u4e2a\u4f8b\u5916\uff1a\u5185\u6838\u3002<\/p>\n<p>\u5982\u679c\u6211\u4eec\u53ef\u4ee5\u5728\u6ca1\u6709\u5f3a\u5236\u91cd\u542f\u7684\u60c5\u51b5\u4e0b\u66f4\u65b0\u5185\u6838\uff0c\u90a3\u4e0d\u662f\u5f88\u597d\u5417\uff1f\u8fd9\u662flivepatch\uff0cLinux\u5185\u6838\u7684\u7279\u6027\u4f7f\u5b83\u6210\u4e3a\u53ef\u80fd\u3002\u8ba9\u6211\u4eec\u53d1\u73b0\u5b83\u662f\u5982\u4f55\u5de5\u4f5c\u7684\uff0c\u4ee5\u53ca\u4f60\u662f\u5426\u53ef\u4ee5\u5728\u4f60\u7684\u7cfb\u7edf\u4e0a\u4f7f\u7528\u5b83\u3002<\/p>\n<h1>\u4f7f\u7528livepatch\u6700\u5927\u5316\u6b63\u5e38\u8fd0\u884c\u65f6\u95f4<\/h1>\n<h2>\u4ec0\u4e48\u662f\u5b9e\u65f6\u5185\u6838\u4fee\u8865\uff1f<\/h2>\n<p>\u5b9e\u65f6\u5185\u6838\u4fee\u8865\u662f\u5c06\u5b89\u5168\u8865\u4e01\u5e94\u7528\u4e8e\u6b63\u5728\u8fd0\u884c\u7684Linux\u5185\u6838\u800c\u65e0\u9700\u91cd\u65b0\u542f\u52a8\u7cfb\u7edf\u7684\u8fc7\u7a0b\u3002Linux\u7684\u5b9e\u73b0\u540d\u4e3alivepatch\u3002\u4fee\u8865\u5b9e\u65f6\u5185\u6838\u7684\u8fc7\u7a0b\u662f\u4e00\u4e2a\u76f8\u5f53\u590d\u6742\u7684\u8fc7\u7a0b\u3002\u5b83\u53ef\u4ee5\u4e0e\u5fc3\u810f\u76f4\u89c6\u624b\u672f\u8fdb\u884c\u6bd4\u8f83\u3002\u60a3\u8005\u672c\u8eab\u5c31\u662f\u6838\u5fc3\uff0c\u9700\u8981\u7cbe\u786e\u548c\u8c28\u614e\u624d\u80fd\u628a\u4e8b\u60c5\u505a\u597d\u3002\u4e00\u4e2a\u9519\u8bef\u7684\u4e3e\u52a8\uff0c\u5b83\u662f\u6e38\u620f\u7ed3\u675f\u3002<\/p>\n<p>\u5b9e\u65f6\u4fee\u8865\u7684\u4e00\u4e2a\u597d\u5904\u662f\u80fd\u591f\u63a8\u8fdf\u91cd\u65b0\u542f\u52a8\uff0c\u76f4\u5230\u53ef\u4ee5\u5b8c\u6210\u8ba1\u5212\u7684\u7ef4\u62a4\u3002\u8fd9\u610f\u5473\u7740\u53ef\u4ee5\u6700\u5927\u5316\u7cfb\u7edf\u7684\u53ef\u7528\u6027\u3002\u53e6\u4e00\u4e2a\u597d\u5904\u662f\u5b89\u5168\u66f4\u65b0\u4e0d\u4ec5\u5b89\u88c5\uff0c\u800c\u4e14\u7acb\u5373\u751f\u6548\u3002\u867d\u7136\u5b9e\u65f6\u4fee\u8865\u6709\u5176\u81ea\u8eab\u7684\u98ce\u9669\uff0c\u4f46\u81f3\u5c11\u53ef\u4ee5\u51cf\u8f7b\u5df2\u77e5\u7684\u6f0f\u6d1e\u3002<\/p>\n<h2>\u8865\u4e01\u7a0b\u5e8f\u7684\u8981\u6c42<\/h2>\n<p>\u8981\u5141\u8bb8\u5b9e\u65f6\u4fee\u8865\u5de5\u4f5c\uff0c\u9700\u8981\u6ee1\u8db3\u51e0\u4e2a\u8981\u6c42\u3002\u9996\u5148\uff0c\u5185\u6838\u672c\u8eab\u9700\u8981\u652f\u6301livepatch\u3002\u57284.x\u4e2d\u6dfb\u52a0\u4e86\u521d\u59cb\u652f\u6301\uff0c\u56e0\u6b64\u60a8\u9700\u8981\u4e00\u4e2a\u6700\u65b0\u7684\u5185\u6838\u3002\u5176\u6b21\uff0c\u60a8\u7684\u7cfb\u7edf\u9700\u8981\u4e00\u4e2a\u5ba2\u6237\u7aef\u5de5\u5177\u6765\u68c0\u7d22\u5185\u6838\u8865\u4e01\u5e76\u52a0\u8f7d\u5b83\u4eec\u3002\u8981\u5141\u8bb8\u52a0\u8f7d\u5185\u6838\u8865\u4e01\uff0c\u9700\u8981\u5c06\u7cfb\u7edf\u914d\u7f6e\u4e3a\u5141\u8bb8\u52a0\u8f7d\u5185\u6838\u6a21\u5757\u3002\u5185\u6838\u8865\u4e01\u901a\u5e38\u7531Linux\u53d1\u884c\u7248\u521b\u5efa\u3002\u5b83\u9700\u8981\u4e00\u4e9b\u4e13\u4e1a\u77e5\u8bc6\u624d\u80fd\u77e5\u9053\u5982\u4f55\u91cd\u5b9a\u5411\u6307\u4ee4\u96c6\u3002<\/p>\n<h2>\u5b9e\u65f6\u5185\u6838\u4fee\u8865\u5982\u4f55\u5de5\u4f5c\uff1f<\/h2>\n<p>\u6709\u4e09\u4e2a\u529f\u80fd\u53ef\u4ee5\u5728\u5185\u6838\u8fd0\u884c\u65f6\u5bf9\u5176\u8fdb\u884c\u4fee\u8865\uff1a<\/p>\n<ul>\n<li>Kernel probes\uff08Kprobes\uff09<\/li>\n<li>Function tracing\uff08Ftrace\uff09<\/li>\n<li>Livepatching\uff08livepatch\uff09<\/li>\n<\/ul>\n<p>\u8fd9\u4e9b\u529f\u80fd\u5404\u6709\u5404\u7684\u4f5c\u7528\uff0c\u5e76\u7d27\u5bc6\u914d\u5408\u3002\u7531\u4e8e\u5b9e\u65f6\u4fee\u8865\u8fc7\u7a0b\u5b58\u5728\u98ce\u9669\uff0c\u56e0\u6b64\u6bcf\u4e2a\u90fd\u9700\u8981\u5c0f\u5fc3\u3002\u8d23\u4efb\u5c06\u4ece\u4e00\u4e2a\u4f20\u9012\u5230\u53e6\u4e00\u4e2a\uff0c\u76f4\u5230\u5b8c\u6574\u7684\u8865\u4e01\u5468\u671f\u7ed3\u675f\u3002<\/p>\n<h2>\u795e\u5723\u7684\u4e09\u4f4d\u4e00\u4f53\uff1aKprobes\uff0cFunction Tracer\u548cLivepatch<\/h2>\n<p>\u8ba9\u6211\u4eec\u6765\u770b\u770b\u4e09\u4e2a\u5185\u6838\u529f\u80fd\uff0c\u4f7f\u4fee\u8865\u8fc7\u7a0b\u6210\u4e3a\u53ef\u80fd\u3002<\/p>\n<ul>\n<li>Kprobes<br \/>\nKprobes\u6216\u5185\u6838\u63a2\u6d4b\u5668\u662f\u4e00\u79cd\u5185\u6838\u529f\u80fd\uff0c\u5f00\u53d1\u4eba\u5458\u4f7f\u7528\u5b83\u6765\u6d4b\u91cfLinux\u5185\u6838\u5e76\u6267\u884c\u8c03\u8bd5\u3002Kprobes\u5141\u8bb8\u8fdb\u5165\u5185\u6838\u4f8b\u7a0b\u548c\u8bb8\u591a\u4ee3\u7801\u5730\u5740\u3002\u8fd9\u79f0\u4e3a\u65ad\u70b9\uff0c\u5141\u8bb8\u5f00\u53d1\u4eba\u5458\u91c7\u53d6\u884c\u52a8\u3002\u8fd9\u6837\u7684\u884c\u52a8\u53ef\u80fd\u662f\u8fd0\u884c\u4e00\u5957\u65b0\u7684\u6307\u4ee4\u3002<\/li>\n<li>Ftrace<br \/>\n\u4e0b\u4e00\u4e2a\u529f\u80fd\u540d\u4e3aFunction Tracer\u6216Ftrace\u3002\u5b83\u662f\u4e00\u4e2a\u5f3a\u5927\u7684\u6846\u67b6\uff0c\u53ef\u4ee5\u6d4b\u91cf\u5185\u6838\u4e2d\u7684\u51e0\u4e2a\u65b9\u9762\uff0c\u5982\u4e8b\u4ef6\u548c\u4e2d\u65ad\u3002\u4f8b\u5982\uff0c\u5b83\u53ef\u4ee5\u6d4b\u91cf\u7279\u5b9a\u529f\u80fd\u7684\u5ef6\u8fdf\uff0c\u4f8b\u5982\u5199\u5165\u78c1\u76d8\u3002<\/li>\n<li>Livepatch<br \/>\nLivepatch\u662f\u7b2c\u4e09\u4e2a\u7ec4\u4ef6\u3002\u5b83\u4e5f\u662f\u5185\u6838\u7684\u6700\u65b0\u6210\u5458\u3002\u4f7f\u7528\u81ea\u5b9a\u4e49Ftrace\u5904\u7406\u7a0b\u5e8f\uff0c\u5b83\u53ef\u4ee5\u91cd\u5b9a\u5411\u4f8b\u7a0b\u5e76\u8df3\u8f6c\u5230\u4e00\u7ec4\u4fee\u8865\u7684\u6307\u4ee4\u3002<\/li>\n<\/ul>\n<h1>\u5185\u6838\u8865\u4e01\u521b\u5efa<\/h1>\n<p>\u5b9e\u65f6\u4fee\u8865\u4ece\u5236\u4f5c\u8865\u4e01\u5f00\u59cb\u3002\u8fd9\u610f\u5473\u7740\u9700\u8981\u66f4\u6539\u7279\u5b9a\u7684\u5185\u6838\u51fd\u6570\u3002\u53ef\u4ee5\u4f7f\u7528\u50cfkpatch-build\u8fd9\u6837\u7684\u5de5\u5177\u6765\u521b\u5efa\u8865\u4e01\u3002\u7ed3\u679c\u662f\u4e00\u4e2a\u5185\u6838\u6a21\u5757\uff0c\u7136\u540e\u5206\u53d1\u3002\u52a0\u8f7d\u6b64\u6a21\u5757\u65f6\uff0c\u5b83\u786e\u4fdd\u4f7f\u7528\u7279\u5b9a\u7cfb\u7edf\u8c03\u7528\u7684\u8fdb\u7a0b\u6b63\u5728\u4f7f\u7528\u5176\u4fee\u8865\u7248\u672c\u3002\u5b83\u7c7b\u4f3c\u4e8e\u4ea4\u901a\u5206\u6d41\u3002<\/p>\n<h1>\u5b9e\u65f6\u4fee\u8865\uff08Livepatch\uff09\u5b9e\u73b0\u7684\u5386\u53f2<\/h1>\n<p>\u867d\u7136livepatch\u529f\u80fd\u662f\u5141\u8bb8\u5b9e\u65f6\u4fee\u8865\u7684\u6700\u540e\u4e00\u4e2a\u7f3a\u5931\u94fe\u63a5\uff0c\u4f46\u662f\u9700\u8981\u51e0\u5e74\u7684\u5f00\u53d1\u624d\u80fd\u8fbe\u5230\u8fd9\u4e00\u70b9\u3002\u5185\u6838\u4fee\u8865\u7684\u7b2c\u4e00\u4e2a\u5de5\u4f5c\u5b9e\u73b0\u662fKsplice\u3002\u8be5\u9879\u76ee\u662f\u9ebb\u7701\u7406\u5de5\u5b66\u9662\u5927\u5b66\u7814\u7a76\u7684\u4e00\u90e8\u5206\u3002\u56db\u540d\u5b66\u751f\u521b\u5efa\u4e86Ksplice\u516c\u53f8\uff0c\u4ee5\u63a8\u5e7f\u8fd9\u9879\u65b0\u6280\u672f\u3002Ksplice\uff08\u8be5\u516c\u53f8\uff09\u88abOracle\u6536\u8d2d\uff0c\u5e76\u4f5c\u4e3a\u4ed6\u4eec\u81ea\u5df1\u7684Linux\u53d1\u884c\u7248\u7684\u5355\u72ec\u670d\u52a1\u51fa\u552e\u3002<\/p>\n<p>2014\u5e74\uff0cRed Hat\u521b\u5efa\u4e86kpatch\u5e76\u5728GPLv2\u8bb8\u53ef\u4e0b\u53d1\u5e03\u4e86\u5b83\u3002\u540c\u5e74\uff0cSUSE\u5ba3\u5e03\u4e86kGraft\u3002\u4e24\u79cd\u6280\u672f\u975e\u5e38\u76f8\u4f3c\uff0c\u4f46\u6709\u4e00\u4e9b\u7ec6\u5fae\u5dee\u522b\u3002Red Hat\u7684\u5b9e\u73b0\u963b\u6b62\u5185\u6838\u5e94\u7528\u5b9e\u65f6\u4fee\u8865\uff0c\u800ckGraft\u6267\u884c\u5ef6\u8fdf\u4fee\u8865\u3002\u5728kGraft\u9700\u8981\u624b\u52a8\u521b\u5efa\u8865\u4e01\u7684\u5730\u65b9\uff0ckpatch\u5141\u8bb8\u624b\u52a8\u548c\u81ea\u52a8\u8865\u4e01\u521b\u5efa\u3002<\/p>\n<h2>\u5546\u4e1a\u4ea7\u54c1<\/h2>\n<p>\u7531\u4e8e\u8be5\u529f\u80fd\u9700\u6c42\u91cf\u5f88\u5927\uff0c\u56e0\u6b64\u5927\u591a\u6570Linux\u53d1\u884c\u7248\u4ec5\u63d0\u4f9b\u4ed8\u8d39\u9644\u52a0\u9009\u9879\u3002\u50cfKsplice\uff0ckpatch\u548ckGraft\u8fd9\u6837\u7684\u6280\u672f\u5728\u4f9b\u5e94\u5546\u4e2d\u5177\u6709\u5546\u4e1a\u4ef7\u503c\u3002\u5b9e\u65f6\u4fee\u8865\u529f\u80fd\u7684\u5178\u578b\u7528\u6237\u613f\u610f\u4e3a\u6b64\u652f\u4ed8\u5927\u91cf\u8d44\u91d1\u3002\u867d\u7136\u6709\u4e00\u4e9b\u4f8b\u5916\uff0c\u4f46\u5927\u591a\u6570\u7528\u6237\u65e0\u6cd5\u76f4\u63a5\u8bbf\u95ee\u6b64\u6280\u672f\u3002\u6162\u6162\u5730\u8fd9\u53ef\u80fd\u4f1a\u6539\u53d8\uff0c\u7279\u522b\u662f\u73b0\u5728livepatch\u767b\u9646\u5185\u6838\u3002<\/p>\n<h1>\u5185\u6838\u5b9e\u65f6\u4fee\u8865\u6838\u5fc3<\/h1>\n<p>\u843d\u5728Linux\u5185\u6838\u6e90\u4ee3\u7801\u6811\u4e2d\u7684\u5b9e\u73b0\u540d\u4e3alivepatch\u3002\u5b83\u662fkpatch\u548ckGraft\u8fd9\u4e24\u4e2a\u4e16\u754c\u4e2d\u6700\u597d\u7684\u3002\u5b83\u88ab\u547d\u540d\u4e3a<a href=\"https:\/\/links.jianshu.com\/go?to=https%3A%2F%2Fgithub.com%2Ftorvalds%2Flinux%2Fblob%2Fmaster%2Fkernel%2Flivepatch%2Fcore.c\" target=\"_blank\" rel=\"noopener\">Kernel Live Patch Core<\/a>\uff0c\u56e0\u6b64\u9002\u7528\u4e8e\u6240\u6709\u4eba\u3002\u7531\u4e8e\u6b64\u529f\u80fd\u73b0\u5728\u662f\u5185\u6838\u7684\u7ec4\u4ef6\u4e4b\u4e00\uff0c\u56e0\u6b64\u4e0d\u518d\u9700\u8981\u81ea\u5b9a\u4e49\u4fee\u8865\u7a0b\u5e8f\u3002<\/p>\n<h2>\u54ea\u4e9b\u53d1\u884c\u7248\u76ee\u524d\u652f\u6301\u5b9e\u65f6\u4fee\u8865\uff1f<\/h2>\n<p>\u6b64\u65f6\uff0c\u6d4b\u8bd5livepatch\u5e76\u4e0d\u5bb9\u6613\uff0c\u56e0\u4e3a\u5e76\u975e\u6240\u6709\u5185\u6838\u90fd\u652f\u6301\u5b83\uff0c\u6216\u8005\u4f7f\u7528\u5ba2\u6237\u7aef\u5de5\u5177\u6765\u6dfb\u52a0\u548c\u5e94\u7528\u8865\u4e01\u3002\u5468\u56f4\u6709\u4e0d\u540c\u7684\u6280\u672f\uff0c\u5982kpatch\uff0cksplice\uff0ckGraft\u548clivepatch\u3002\u4ee5\u4e0b\u662f\u4e00\u4e9b\u4f7f\u7528\u7684\u6280\u672f\u53ca\u5176\u72b6\u6001\u7684\u5feb\u901f\u6982\u8ff0\u3002<\/p>\n<ul>\n<li>Arch Linux\uff08livepatch\uff0ckpatch-git\u5de5\u5177\uff09<\/li>\n<li>Debian\uff08\u672a\u77e5\uff0c\u4e5f\u8bb8\u662fDebian 9\uff1f\uff09<\/li>\n<li>Gentoo\uff08<a href=\"https:\/\/links.jianshu.com\/go?to=https%3A%2F%2Fwiki.gentoo.org%2Fwiki%2FLive_patching\" target=\"_blank\" rel=\"noopener\">kpatch\u6216ksplice<\/a>\uff09<\/li>\n<li>Oracle Linux\uff08ksplice\uff09<\/li>\n<li>\u7ea2\u5e3d\u4f01\u4e1aLinux 7\uff08kpatch\u6216ksplice\uff09<\/li>\n<li>SUSE\uff08kGraft\uff09<\/li>\n<li>Ubuntu 16.04\u53ca\u66f4\u9ad8\u7248\u672c\uff08livepatch\uff09<\/li>\n<\/ul>\n<h2>\u5982\u4f55\u68c0\u67e5\u5185\u6838\u662f\u5426\u652f\u6301livepatch\uff1f<\/h2>\n<p>\u8981\u68c0\u67e5\u5185\u6838\u4e2d\u662f\u5426\u652f\u6301livepatch\uff0c\u8bf7\u68c0\u67e5\u662f\u5426 \u542f\u7528\u4e86 CONFIG_HAVE_LIVEPATCH\u8bbe\u7f6e\u3002\u6839\u636e\u60a8\u7684Linux\u53d1\u884c\u7248\uff0c\u6709\u4e0d\u540c\u7684\u65b9\u6cd5\u53ef\u4ee5\u68c0\u67e5\u6b64\u652f\u6301\u3002<\/p>\n<ul>\n<li>Arch Linux\uff08\u5d4c\u5165\u5f0f\u7684\u591a\u7528\uff09<\/li>\n<\/ul>\n<p>zcat \/proc\/config.gz | grep LIVEPATCH<\/p>\n<p>\u5982\u679c\u5b83\u5df2\u542f\u7528\u5b83\u5c06\u663e\u793a\u7ed9\u60a8CONFIG_HAVE_LIVEPATCH=y\u3002<\/p>\n<ul>\n<li>Ubuntu<\/li>\n<\/ul>\n<div class=\"_2Uzcx_\"><button class=\"VJbwyy\" type=\"button\" aria-label=\"\u590d\u5236\u4ee3\u7801\"><i class=\"anticon anticon-copy\" aria-label=\"icon: copy\"><\/i><\/button><\/p>\n<pre class=\"line-numbers  language-jsx\"><code class=\"  language-jsx\">cat <span class=\"token operator\">\/<\/span>boot<span class=\"token operator\">\/<\/span>config<span class=\"token operator\">-<\/span><span class=\"token function\">$<\/span><span class=\"token punctuation\">(<\/span>uname <span class=\"token operator\">-<\/span>r<span class=\"token punctuation\">)<\/span> <span class=\"token operator\">|<\/span> grep <span class=\"token constant\">LIVEPATCH<\/span>\r\n<\/code><\/pre>\n<\/div>\n<ul>\n<li>\u901a\u8fc7sysfs\u5b9e\u73b0Livepatch\u72b6\u6001<br \/>\n\u5982\u679c\u542f\u7528\u4e86\u5185\u6838\u4e2d\u7684livepatch\u652f\u6301\uff0c\u90a3\u4e48\u8fd8\u6709\u53e6\u4e00\u79cd\u65b9\u6cd5\u53ef\u4ee5\u68c0\u67e5\u5b83\u3002\u53ef\u4ee5\u5728\u4f2a\u6587\u4ef6\u7cfb\u7edfsysfs\u4e2d\u627e\u5230livepatch\u6761\u76ee\u548c\u4fee\u8865\u7a0b\u5e8f\u3002\u67e5\u627e \/sys \/kernel\/livepatch \u76ee\u5f55\u3002<\/li>\n<\/ul>\n<div class=\"_2Uzcx_\"><button class=\"VJbwyy\" type=\"button\" aria-label=\"\u590d\u5236\u4ee3\u7801\"><i class=\"anticon anticon-copy\" aria-label=\"icon: copy\"><\/i><\/button><\/p>\n<pre class=\"line-numbers  language-undefined\"><code class=\"  language-undefined\">ls -ld \/sys\/kernel\/livepatch\r\n<\/code><\/pre>\n<\/div>\n<p>\u53e6\u4e00\u4e2a\u9009\u62e9\u662f\u67e5\u770b\u7236\u5185\u6838\u76ee\u5f55\u4ee5\u67e5\u770b\u6240\u6709\u4e0e\u5185\u6838\u76f8\u5173\u7684\u9009\u9879\u3002<\/p>\n<h2>\u5b9e\u65f6\u4fee\u8865Linux\u5185\u6838<\/h2>\n<p>\u8981\u542f\u7528\u5b9e\u65f6\u4fee\u8865\uff0c\u6211\u4eec\u9700\u8981\u5ba2\u6237\u7aef\u6765\u6267\u884c\u6b64\u4efb\u52a1\u3002\u5ba2\u6237\u7aef\u5177\u6709\u5982\u4f55\u64cd\u4f5c\u7279\u5b9a\u5185\u6838\u7684\u8bf4\u660e\u3002\u5982\u4e0a\u6240\u8ff0\uff0c\u8fd9\u662f\u4e00\u9879\u5fae\u5999\u7684\u5de5\u4f5c\uff0c\u56e0\u6b64\u65e0\u6cd5\u666e\u904d\u9002\u7528\u3002\u56e0\u6b64\uff0c\u5b83\u662fLinux\u53d1\u884c\u7248\u7279\u5b9a\u7684\u3002\u5bf9\u4e8e\u8fd9\u7bc7\u535a\u6587\uff0c\u6211\u4eec\u5c06\u4f7f\u7528Ubuntu 16.04\uff08LTS\uff09\u7cfb\u7edf\u3002\u5ba2\u6237\u7aef\u5b9e\u7528\u7a0b\u5e8f\u662f\u5546\u4e1a\u7684\uff08\u7531Canonical\u63d0\u4f9b\uff09\u3002\u5e78\u8fd0\u7684\u662f\uff0c\u5b83\u4eec\u5141\u8bb8\u514d\u8d39\u7528\u6237\u4fee\u8865\u6700\u591a\u4e09\u4e2a\u7cfb\u7edf\u8fdb\u884c\u5b9e\u65f6\u4fee\u8865\u3002\u5728\u6211\u4eec\u4f7f\u7528\u8be5\u8f6f\u4ef6\u4e4b\u524d\uff0c\u6211\u4eec\u9700\u8981\u5148\u521b\u5efa\u4e00\u4e2a<a href=\"https:\/\/links.jianshu.com\/go?to=https%3A%2F%2Fauth.livepatch.canonical.com%2F\" target=\"_blank\" rel=\"noopener\">\u4ee4\u724c<\/a>\u3002<\/p>\n<h3>\u5b89\u88c5\u5ba2\u6237\u7aef<\/h3>\n<h4>\u4f7f\u7528canonical-livepath\uff08Ubuntu\uff09<\/h4>\n<ul>\n<li>\u7b2c\u4e00\u6b65\u662f\u4f7f\u7528snap \u5b89\u88c5\u540d\u4e3acanonical-livepatch\u7684livepatch\u5b9e\u7528\u7a0b\u5e8f\u3002<\/li>\n<\/ul>\n<div class=\"_2Uzcx_\"><button class=\"VJbwyy\" type=\"button\" aria-label=\"\u590d\u5236\u4ee3\u7801\"><i class=\"anticon anticon-copy\" aria-label=\"icon: copy\"><\/i><\/button><\/p>\n<pre class=\"line-numbers  language-undefined\"><code class=\"  language-undefined\">sudo snap install canonical-livepatch\r\n<\/code><\/pre>\n<\/div>\n<p>\u7136\u540e\u542f\u7528livepatch\uff1a<\/p>\n<div class=\"_2Uzcx_\"><button class=\"VJbwyy\" type=\"button\" aria-label=\"\u590d\u5236\u4ee3\u7801\"><i class=\"anticon anticon-copy\" aria-label=\"icon: copy\"><\/i><\/button><\/p>\n<pre class=\"line-numbers  language-bash\"><code class=\"  language-bash\">sudo canonical-livepatch enable [token]\r\n<\/code><\/pre>\n<\/div>\n<p>\u4f60\u5e94\u8be5\u5f97\u5230\u4e00\u4e2a\u79ef\u6781\u7684\u56de\u5e94\uff0c\u8bf4\u201c\u6210\u529f\u542f\u7528\u8bbe\u5907\u3002\u4f7f\u7528\u673a\u5668\u4ee4\u724c\uff1a[\u4ee4\u724c]\u201c\u3002\u5982\u679c\u6ca1\u6709\uff0c\u8bf7\u67e5\u770b\u672c\u6587\u5e95\u90e8\u7684\u5e38\u89c1\u95ee\u9898\u3002<\/p>\n<p>\u73b0\u5728\u5df2\u7ecf\u5b89\u88c5\u4e86\u5ba2\u6237\u7aef\u5de5\u5177\uff0c\u73b0\u5728\u662f\u65f6\u5019\u4f7f\u7528\u5b83\u4e86\u3002\u4f7f\u7528status\u547d\u4ee4\u8fd0\u884c\u5b83\u3002<\/p>\n<div class=\"_2Uzcx_\"><button class=\"VJbwyy\" type=\"button\" aria-label=\"\u590d\u5236\u4ee3\u7801\"><i class=\"anticon anticon-copy\" aria-label=\"icon: copy\"><\/i><\/button><\/p>\n<pre class=\"line-numbers  language-undefined\"><code class=\"  language-undefined\">canonical-livepatch status\r\n<\/code><\/pre>\n<\/div>\n<div class=\"image-package\">\n<div class=\"image-container\">\n<div class=\"image-container-fill\"><\/div>\n<div class=\"image-view\" data-width=\"444\" data-height=\"70\"><img decoding=\"async\" class=\"\" src=\"https:\/\/upload-images.jianshu.io\/upload_images\/17896126-586e9424b7f1efeb.png?imageMogr2\/auto-orient\/strip|imageView2\/2\/w\/444\/format\/webp\" data-original-src=\"\/\/upload-images.jianshu.io\/upload_images\/17896126-586e9424b7f1efeb.png\" data-original-width=\"444\" data-original-height=\"70\" data-original-format=\"image\/png\" data-original-filesize=\"12667\" data-image-index=\"0\" \/><\/div>\n<\/div>\n<div class=\"image-caption\">image.png<\/div>\n<\/div>\n<p>Linux\u5185\u6838\u5b8c\u5168\u4fee\u8865\u4e86Ubuntu<br \/>\n\u60a8\u8fd8\u53ef\u4ee5\u4f7f\u7528-verbose\u9009\u9879\u67e5\u770b\u6709\u5173\u4efb\u4f55\u5df2\u5e94\u7528\u4fee\u8865\u7a0b\u5e8f\u7684\u66f4\u591a\u4fe1\u606f\u3002\u4f8b\u5982\uff0c\u6d89\u53ca\u54ea\u4e2aCVE\u3002<\/p>\n<h4>\u5982\u4f55\u77e5\u9053\u5185\u6838\u662f\u5426\u6b63\u786e\u4fee\u8865\uff1f<\/h4>\n<p>\u56e0\u6b64\u5b83\u8868\u793a\u5b83\u6b63\u5728\u5b8c\u6210\u5b83\u7684\u5de5\u4f5c\uff0c\u56e0\u4e3a\u5b83\u5df2\u5b8c\u5168\u4fee\u8865\u3002\u5f88\u597d\uff0c\u4f46\u6211\u4eec\u600e\u4e48\u77e5\u9053\uff1f\u7531\u4e8e\u8fd9\u662f\u4e00\u4e2a\u65e7\u5185\u6838\uff0c\u6211\u4eec\u77e5\u9053\u6709\u4e00\u4e9b\u8865\u4e01\u53ef\u7528\u3002<\/p>\n<p>1.\u4f7f\u7528livepatch\u76ee\u5f55<\/p>\n<p>\u7b2c\u4e00\u4e2a\u9009\u9879\u662f\u67e5\u770b\u524d\u9762\u63d0\u5230\u7684\u76ee\u5f55\/sys\/kernel\/livepatch\u5e76\u67e5\u770b\u5176\u4e2d\u662f\u5426\u6709\u4efb\u4f55\u6761\u76ee\u3002<br \/>\n\u56e0\u6b64\u5b83\u8868\u793a\u5b83\u6b63\u5728\u5b8c\u6210\u5b83\u7684\u5de5\u4f5c\uff0c\u56e0\u4e3a\u5b83\u5df2\u5b8c\u5168\u4fee\u8865\u3002\u5f88\u597d\uff0c\u4f46\u6211\u4eec\u600e\u4e48\u77e5\u9053\uff1f\u7531\u4e8e\u8fd9\u662f\u4e00\u4e2a\u65e7\u5185\u6838\uff0c\u6211\u4eec\u77e5\u9053\u6709\u4e00\u4e9b\u8865\u4e01\u53ef\u7528\u3002\u65e9\u671f\u5f15\u7528\u7684\u76ee\u5f55 \/sys\/kernel\/livepatch\u6709\u7b54\u6848\u3002<\/p>\n<div class=\"image-package\">\n<div class=\"image-container\">\n<div class=\"image-container-fill\"><\/div>\n<div class=\"image-view\" data-width=\"770\" data-height=\"51\"><img decoding=\"async\" class=\"\" src=\"https:\/\/upload-images.jianshu.io\/upload_images\/17896126-0c0af11f6fc48dd0.png?imageMogr2\/auto-orient\/strip|imageView2\/2\/w\/770\/format\/webp\" data-original-src=\"\/\/upload-images.jianshu.io\/upload_images\/17896126-0c0af11f6fc48dd0.png\" data-original-width=\"770\" data-original-height=\"51\" data-original-format=\"image\/png\" data-original-filesize=\"16434\" data-image-index=\"1\" \/><\/div>\n<\/div>\n<div class=\"image-caption\">image.png<\/div>\n<\/div>\n<p>\u6211\u4eec\u53ef\u4ee5\u770b\u5230\u5e94\u7528\u4e86\u8865\u4e01\u3002\u5b83\u5177\u6709\u76f8\u540c\u7684\u5185\u6838\u7248\u672c\u3002\u76ee\u5f55\u540d\u79f0\u4e2d\u7684\u6700\u540e\u4e00\u4e2a\u6570\u5b57\u662f\u6307canonical-livepatch\u8f93\u51fa\u4e2d\u663e\u793a\u7684\u7248\u672c\u53f7\u3002<\/p>\n<p>2.\u4f7f\u7528\u6c61\u70b9\u6807\u5fd7<br \/>\n\u53e6\u4e00\u79cd\u77e5\u9053\u5185\u6838\u5df2\u88ab\u4fee\u8865\u7684\u65b9\u6cd5\u662f\u901a\u8fc7\/proc\/sys\/kernel\/tainted\u68c0\u67e5\u5185\u6838\u662f\u5426\u201c\u88ab\u6c61\u67d3\u201d\uff08\u503c\u5927\u4e8e\u96f6\uff09\u3002\u8fd9\u544a\u8bc9\u8c03\u8bd5\u5668\u548c\u5176\u4ed6\u5de5\u5177\u5185\u6838\u5df2\u88ab\u66f4\u6539\u6216\u8c03\u6574\u3002<\/p>\n<div class=\"_2Uzcx_\"><button class=\"VJbwyy\" type=\"button\" aria-label=\"\u590d\u5236\u4ee3\u7801\"><i class=\"anticon anticon-copy\" aria-label=\"icon: copy\"><\/i><\/button><\/p>\n<pre class=\"line-numbers  language-undefined\"><code class=\"  language-undefined\">cat \/proc\/sys\/kernel\/tainted\r\n<\/code><\/pre>\n<\/div>\n<p>\u8981\u83b7\u53d6\u66f4\u591a\u6709\u5173\u5185\u6838\u6c61\u67d3\u7684\u4fe1\u606f\uff0c\u8bf7\u4f7f\u7528dmesg \u547d\u4ee4\u3002<\/p>\n<div class=\"_2Uzcx_\"><button class=\"VJbwyy\" type=\"button\" aria-label=\"\u590d\u5236\u4ee3\u7801\"><i class=\"anticon anticon-copy\" aria-label=\"icon: copy\"><\/i><\/button><\/p>\n<pre class=\"line-numbers  language-undefined\"><code class=\"  language-undefined\">dmesg -T | grep tainted\r\n<\/code><\/pre>\n<\/div>\n<p>\u6211\u4eec\u53ef\u4ee5\u4f7f\u7528\u76f8\u540c\u7684\u547d\u4ee4\u6765\u67e5\u770b\u6709\u5173livepatch\u548c\u76f8\u5173\u8be6\u7ec6\u4fe1\u606f\u7684\u66f4\u591a\u4fe1\u606f\u3002\u6709\u8da3\u7684\u662f\uff0c\u5b83\u663e\u793a\u6211\u4eec\u7684\u6d4b\u8bd5\u671f\u95f4\u9a8c\u8bc1\u5931\u8d25\u3002<\/p>\n<div class=\"image-package\">\n<div class=\"image-container\">\n<div class=\"image-container-fill\"><\/div>\n<div class=\"image-view\" data-width=\"746\" data-height=\"207\"><img decoding=\"async\" class=\"\" src=\"https:\/\/upload-images.jianshu.io\/upload_images\/17896126-137aa2ddbf551b21.png?imageMogr2\/auto-orient\/strip|imageView2\/2\/w\/746\/format\/webp\" data-original-src=\"\/\/upload-images.jianshu.io\/upload_images\/17896126-137aa2ddbf551b21.png\" data-original-width=\"746\" data-original-height=\"207\" data-original-format=\"image\/png\" data-original-filesize=\"79375\" data-image-index=\"2\" \/><\/div>\n<\/div>\n<div class=\"image-caption\">image.png<\/div>\n<\/div>\n<h4>Livepatch\u8b66\u544a<\/h4>\n<p>\u5982\u679c\u60a8\u7684\u7cfb\u7edf\u7ecf\u8fc7\u826f\u597d\u52a0\u56fa\u5e76\u7981\u7528\u52a0\u8f7d\u5185\u6838\u6a21\u5757\uff0c\u90a3\u4e48livepatch\u5c06\u65e0\u6cd5\u8fd0\u884c\u3002\u8fd9\u662f\u56e0\u4e3a\u52a0\u8f7d\u4e86\u5185\u6838\u6a21\u5757\u4ee5\u5e94\u7528\u4fee\u8865\u3002<\/p>\n<div class=\"image-package\">\n<div class=\"image-container\">\n<div class=\"image-container-fill\"><\/div>\n<div class=\"image-view\" data-width=\"528\" data-height=\"34\"><img decoding=\"async\" class=\"\" src=\"https:\/\/upload-images.jianshu.io\/upload_images\/17896126-0a6fb64a9c2180be.png?imageMogr2\/auto-orient\/strip|imageView2\/2\/w\/528\/format\/webp\" data-original-src=\"\/\/upload-images.jianshu.io\/upload_images\/17896126-0a6fb64a9c2180be.png\" data-original-width=\"528\" data-original-height=\"34\" data-original-format=\"image\/png\" data-original-filesize=\"11047\" data-image-index=\"3\" \/><\/div>\n<\/div>\n<div class=\"image-caption\">image.png<\/div>\n<\/div>\n<p>\u8981\u786e\u5b9a\u60a8\u7684\u5185\u6838\u662f\u5426\u5141\u8bb8\u52a0\u8f7d\u6a21\u5757\uff0c\u8bf7\u67e5\u770b\u6587\u4ef6\/proc\/sys\/kernel\/modules_disabled\u3002<\/p>\n<div class=\"_2Uzcx_\"><button class=\"VJbwyy\" type=\"button\" aria-label=\"\u590d\u5236\u4ee3\u7801\"><i class=\"anticon anticon-copy\" aria-label=\"icon: copy\"><\/i><\/button><\/p>\n<pre class=\"line-numbers  language-undefined\"><code class=\"  language-undefined\">cat \/proc\/sys\/kernel\/modules_disabled\r\n<\/code><\/pre>\n<\/div>\n<p>\u5982\u679c\u8fd9\u7ed9\u4f60\u4e00\u4e2a&#8217;1&#8217;\uff0c\u90a3\u4e48\u5c31\u65e0\u6cd5\u52a0\u8f7d\u5185\u6838\u6a21\u5757\u800c\u4e14livepatch\u5c06\u65e0\u6cd5\u5de5\u4f5c\u3002<\/p>\n<h4>\u5bf9livepatch\u9519\u8bef\u8fdb\u884c\u6545\u969c\u6392\u9664<\/h4>\n<p>\u4e0e\u5b88\u62a4\u7a0b\u5e8f\u7684\u8fde\u63a5\u5931\u8d25\uff08Ubuntu\uff09<\/p>\n<blockquote><p>$ canonical-livepatch<br \/>\n2016\/10\/19 17:01:26\u6267\u884c\u542f\u7528\u65f6\u51fa\u9519\u3002<br \/>\n\u4e0e\u5b88\u62a4\u7a0b\u5e8f\u7684\u8fde\u63a5\u5931\u8d25\uff1a\u83b7\u53d6<a href=\"https:\/\/links.jianshu.com\/go?to=http%3A%2F%2F127.0.0.1%2Fenable\" target=\"_blank\" rel=\"noopener\">http:\/\/127.0.0.1\/enable<\/a>\uff1a\u62e8\u6253unix \/var\/snap\/canonical-&gt;livepatch\/15\/<a href=\"https:\/\/links.jianshu.com\/go?to=livepatchd.sock%3Aconnect\" target=\"_blank\" rel=\"noopener\">livepatchd.sock:connect<\/a>\uff1a\u6ca1\u6709\u8fd9\u6837\u7684\u6587\u4ef6\u6216\u76ee\u5f55<\/p><\/blockquote>\n<p>\u6b64\u95ee\u9898\u5f88\u53ef\u80fd\u662f\u56e0\u4e3a\u60a8\u7684snapd\u8f6f\u4ef6\u5305\u5df2\u8fc7\u65f6\u800c\u5bfc\u81f4\u7684\u3002\u9996\u5148\u5347\u7ea7\u5b83sudo apt install snapd\u3002<\/p>\n<p>\u547d\u4ee4\u672a\u627e\u5230\uff08Ubuntu\uff09<\/p>\n<blockquote><p>sudo\uff1acanonical-livepatch\uff1a\u627e\u4e0d\u5230\u547d\u4ee4<\/p><\/blockquote>\n<p>\u5f88\u53ef\u80fd\u7528\u4e8e\u5feb\u7167\u7684\u4e8c\u8fdb\u5236\u76ee\u5f55\u4e0d\u5728\u60a8\u5b9a\u4e49\u7684PATH\u53d8\u91cf\u4e2d\u3002\u89e3\u51b3\u65b9\u6cd5\u662f\u6307\u5de5\u5177\u7684\u5b8c\u6574\u8def\u5f84\uff08\/ snap \/ bin \/ canonical-livepatch\uff09\u3002<\/p>\n<h2>\u76f8\u5173\u8bfb\u7269<\/h2>\n<p>\u6709\u5174\u8da3\u4e86\u89e3\u6709\u5173\u5b9e\u65f6\u4fee\u8865\u7684\u66f4\u591a\u4fe1\u606f\u5417\uff1f\u8fd9\u91cc\u6709\u4e00\u4e9b\u5f88\u597d\u7684\u8d44\u6e90\uff1a<\/p>\n<ul>\n<li><a href=\"https:\/\/links.jianshu.com\/go?to=https%3A%2F%2Fgithub.com%2Ftorvalds%2Flinux%2Fblob%2Fmaster%2FDocumentation%2Flivepatch%2Flivepatch.txt\" target=\"_blank\" rel=\"noopener\">Linux\u5185\u6838\u6587\u6863<\/a><\/li>\n<li><a href=\"https:\/\/links.jianshu.com\/go?to=http%3A%2F%2Fblog.dustinkirkland.com%2F2016%2F10%2Fcanonical-livepatch.html\" target=\"_blank\" rel=\"noopener\">Canonical livepatch\u670d\u52a1<\/a>\uff08\u7531Dustin Kirkland\u63d0\u4f9b\uff09<\/li>\n<li><a href=\"https:\/\/links.jianshu.com\/go?to=https%3A%2F%2Fgithub.com%2Fdynup%2Fkpatch\" target=\"_blank\" rel=\"noopener\">Kpatch<\/a><\/li>\n<li><a href=\"https:\/\/links.jianshu.com\/go?to=https%3A%2F%2Flwn.net%2FArticles%2F619390%2F\" target=\"_blank\" rel=\"noopener\">LWN\u5173\u4e8e\u5185\u6838\u5b9e\u65f6\u4fee\u8865\u7684\u6587\u7ae0<\/a><\/li>\n<\/ul>\n<p>\u6709\u5174\u8da3\u4e86\u89e3\u6709\u5173\u5185\u6838\u53ca\u5176\u529f\u80fd\u7684\u66f4\u591a\u4fe1\u606f\u5417\uff1f\u6211\u4eec\u6b63\u5728\u5f00\u5c55\u4e00\u4e2a\u9879\u76ee\uff0c\u8ba9\u4ed6\u4eec\u5217\u51fa\u6211\u4eec\u7684<a href=\"https:\/\/links.jianshu.com\/go?to=https%3A%2F%2Flinuxsecurity.expert%2Flinux-security%2Ffeatures%2F\" target=\"_blank\" rel=\"noopener\">Linux\u5b89\u5168\u529f\u80fd<\/a>\u9875\u9762\u3002<\/p>\n<p><em>\u559c\u6b22\u8fd9\u7bc7\u6587\u7ae0\u5e76\u559c\u6b22\u505a\u4e00\u4e9b\u56de\u62a5\u5417\uff1f\u4e0e\u4ed6\u4eba\u5206\u4eab\uff0c\u4ee5\u4fbf\u66f4\u591a\u4eba\u9605\u8bfb\u3002\u5feb\u4e50\u8865\u4e01\uff01<\/em><\/p>\n<\/article>\n","protected":false},"excerpt":{"rendered":"<p>\u539f\u6587\u5730\u5740 2019.07.15 14:1<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"colormag_page_container_layout":"default_layout","colormag_page_sidebar_layout":"default_layout","footnotes":""},"categories":[],"tags":[117],"class_list":["post-5283","post","type-post","status-publish","format-standard","hentry","tag-01-linux"],"_links":{"self":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts\/5283","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/comments?post=5283"}],"version-history":[{"count":0,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/posts\/5283\/revisions"}],"wp:attachment":[{"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/media?parent=5283"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/categories?post=5283"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/i007.cc\/wordpress\/wp-json\/wp\/v2\/tags?post=5283"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}